基于ANSYS验证的曲靖市北城广场5#楼剪力墙纠偏技术研究

发布时间：2018-01-30 14:44

本文关键词： 剪力墙偏移纠偏加固增大截面法 ANSYS　出处：《昆明理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：本文结合曲靖市北城广场龙须园一期5#楼地下室剪力墙的纠偏加固项目,介绍了现有的建筑物纠偏技术,包括建筑物偏移的原因、其纠偏的方法、偏移的控制标准、偏移的监测以及纠偏设计的步骤及原则。该项目地下室剪力墙发生偏移的原因是地下室设计需要回填土,不能将剪力墙与首层底板一起浇筑形成一个稳定的整体,但采取的模板支撑强度不足,导致剪力墙强化后发生偏移。针对剪力墙发生偏移,利用全站仪、激光经纬仪、钢尺等仪器对现场进行全面检测,并根据这些现场检测及测量到的数据,使用PKPM建模分析其轴力、平面内外剪力、平面内外弯矩承载力验算,经过分析,提出增大截面的纠偏加固法。即在偏移剪力墙的一侧或两侧植入钢筋网片,再支模板,然后浇筑自密实混凝土,以此达到增大截面纠偏加固的目的。使用ANSYS有限元软件分别对剪力墙在未偏移、偏移时、纠偏后三种状态下进行仿真模拟,导出剪力墙应力云图、钢筋应力云图和剪力墙位移云图,对比分析三种状态下剪力墙的应力和位移,并与实际纠偏加固工程进行对比分析。最后,归纳总结了全文的研究成果以及不足之处,对类似的施工中产生的纠偏加固工作有一定的借鉴意义。
[Abstract]:Combined with the project of correcting and strengthening the shear wall in the basement of the first stage of Longxuyuan of Beicheng Square in Qujing City, this paper introduces the existing building correction technology, including the cause of the deviation of the building, and the method of correcting the deviation. The control standard of migration, the monitoring of migration and the steps and principles of deviation correction design. The reason for the deviation of the basement shear wall in this project is that the basement design needs backfill. The shear wall and the first floor floor slab can not be poured together to form a stable whole, but the adopted formwork support strength is insufficient, leading to the shear wall after strengthening offset. For the shear wall offset, use the total station instrument. The laser theodolite, steel ruler and other instruments are used to detect the field comprehensively, and according to the data measured in the field, PKPM is used to model and analyze the axial force, the shear force inside and outside the plane. Through the analysis of the load capacity of bending moment in and out of the plane, the method of rectifying and strengthening is put forward, that is, the reinforcement mesh is inserted on one side or two sides of the offset shear wall, then the formwork is supported, and then the self-compacting concrete is poured. ANSYS finite element software is used to simulate the shear wall under the three states of no deviation and deviation, and the stress cloud diagram of the shear wall is derived. The stress cloud diagram of steel bar and the displacement cloud diagram of shear wall are compared and analyzed. Finally, the stress and displacement of shear wall under three states are compared and analyzed with the actual rectifying and strengthening project. This paper summarizes the research results and shortcomings of the paper, which has some reference significance for the similar construction work of rectifying and strengthening.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU94;TU746.3

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